lowlevel.s

来自「RT-Thread是发展中的下一代微内核嵌入式实时操作系统」· S 代码 · 共 27 行

/*
 * File      : lowlevel.S
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, RT-Thread Develop Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://openlab.rt-thread.com/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2006-10-26     Bernard      the first version
 */

.globl lowlevel_init
lowlevel_init:
	mov	pc, lr

.globl set_turbo_mode
set_turbo_mode:
	/* turn on turbo mode */
	mrc	p14, 0, r2, c6, c0, 0
	orr	r2, r2, #0xB		/* Turbo, Fast-Bus, Freq change**/
	mcr	p14, 0, r2, c6, c0, 0

	mov	pc, lr